1 | 'use strict';
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2 | var $ = require('../internals/export');
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3 | var toObject = require('../internals/to-object');
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4 | var lengthOfArrayLike = require('../internals/length-of-array-like');
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5 | var setArrayLength = require('../internals/array-set-length');
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6 | var doesNotExceedSafeInteger = require('../internals/does-not-exceed-safe-integer');
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7 | var fails = require('../internals/fails');
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8 |
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9 | var INCORRECT_TO_LENGTH = fails(function () {
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10 | return [].push.call({ length: 0x100000000 }, 1) !== 4294967297;
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11 | });
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12 |
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13 | // V8 <= 121 and Safari <= 15.4; FF < 23 throws InternalError
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14 | // https://bugs.chromium.org/p/v8/issues/detail?id=12681
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15 | var properErrorOnNonWritableLength = function () {
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16 | try {
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17 | // eslint-disable-next-line es/no-object-defineproperty -- safe
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18 | Object.defineProperty([], 'length', { writable: false }).push();
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19 | } catch (error) {
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20 | return error instanceof TypeError;
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21 | }
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22 | };
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23 |
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24 | var FORCED = INCORRECT_TO_LENGTH || !properErrorOnNonWritableLength();
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25 |
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26 | // `Array.prototype.push` method
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27 | // https://tc39.es/ecma262/#sec-array.prototype.push
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28 | $({ target: 'Array', proto: true, arity: 1, forced: FORCED }, {
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29 | // eslint-disable-next-line no-unused-vars -- required for `.length`
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30 | push: function push(item) {
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31 | var O = toObject(this);
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32 | var len = lengthOfArrayLike(O);
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33 | var argCount = arguments.length;
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34 | doesNotExceedSafeInteger(len + argCount);
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35 | for (var i = 0; i < argCount; i++) {
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36 | O[len] = arguments[i];
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37 | len++;
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38 | }
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39 | setArrayLength(O, len);
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40 | return len;
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41 | }
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42 | });
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